Photo taken on May 3, 2016 shows a walkway along a cliff of Yimeng Mountain in Linyi, east China's Shandong Province. (Xinhua/Yin Zhaogong)
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Photo taken on May 3, 2016 shows a walkway along a cliff of Yimeng Mountain in Linyi, east China's Shandong Province. (Xinhua/Yin Zhaogong)